This paper explores the evolution toward Digital Reconfigurable Production Systems (dRPS) to meet modern manufacturing demands for flexibility and customization. Fundamental challenges in implementing dRPS are identified, particularly in manufacturing load balancing across heterogeneous production entities with varying digitalization levels. A framework that integrates real-time, data-driven decision-making and advanced optimization techniques is proposed to address these issues. A case study on connector assembly demonstrates the framework's effectiveness. The paper concludes by outlining future research directions essential for advancing dRPS toward more adaptable and efficient production systems.